Radiocarbon dating has not shown that Giza's pyramids predate the standard chronology. The cited “374 years” and “100–200 years” figures concern organic samples—especially reused wood—not the dates when Khufu and Khafre built their pyramids. Older timber can produce radiocarbon dates centuries before the monument that reused it. Recent Giza dating broadly supports the historical 4th-Dynasty chronology. The video argues that these old-wood results should move the pyramids into the 2nd Dynasty, but the evidence does not support that claim.
Radiocarbon dates of old wood do not make Giza's pyramids older
EgyptGeneral
Key facts
- The cited 1984 result concerned wood from the Great Pyramid and produced a date 374 years earlier than its conventional construction date; it did not date the Giza monuments as a group.
- The later 1995 results likewise dated organic material. Dates 100–200 years older than construction can result from older wood reused in a pyramid and do not establish that the pyramids themselves are older.
- Radiocarbon work at Giza broadly corroborates the standard chronology. Recent estimates place Khufu's pyramid around 2700–2500 BC, with many estimates around 2580–2560 BC.
- Khufu and Khafre's pyramids belong to the 4th Dynasty. No radiocarbon evidence places them in the 2nd Dynasty; that is the video presenter's interpretation.
- Comparisons with samples from North Saqqara and Middle Kingdom sites do not date a pyramid when the organic material was already old when reused.
Sources
NOVA Online/Pyramids/How Old Are the Pyramids?pbs.org
It's not impossible, but it has a very, very low level of probability, that there was an older civilization there.
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How Old Are the Pyramids?|AERAaeraweb.org
The average radiocarbon dates were 374 years earlier than expected. In spite of this discrepancy, the radiocarbon dates confirmed that the Great Pyramid ...
(PDF) Dating the Pyramidsacademia.edu
The 1984 and 1995 Radiocarbon Dating Projects aimed to refine the chronology of ancient Egyptian pyramids. Middle Kingdom dates are fixed, but the First ...
Dating the Pyramids - Archaeology Magazine Archivearchive.archaeology.org
1984 Results. The 1984 radiocarbon dates from monuments spanning Dynasty 3 (Djoser) to late Dynasty 5 (Unas), averaged 374 years older than the Cambridge ...
Reanalysis of the Chronological Discrepancies Obtained ...researchgate.net
The most extensive chronometric study ever undertaken on Egyptian Dynastic sites was published inRadiocarbonby Bonani et al. (2001).
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